Respiratory gaseous flow measurement is one of an unsteady gas flow measurement and becoming very important. It has a wide field of application, for example, a measurement of lung function, an evaluation of respiratory gas exchange, a grasp of medical condition and so on. Especially, the evaluation of the absolute quantity and the analysis of the breathing waveform pattern are very important in the respiratory gaseous flow measurement. However, the dynamic characteristics of the respiratory gaseous flow meter has not been quantitatively measured and evaluated in the actual unsteady flows. There is substantial literature dealing with the measurement of unsteady gas flow. Most of these studies generated unsteady mass flows by using piston cylinders. Clearly, in these studies, substantial efforts must have been required in order to minimize the sensitivity dependence of density fluctuation on pressure and temperature variations. On the other hand, the dynamic characteristic evaluation of the gaseous flow meter which reproduced the sinusoidal waveform with only a single frequency component in the measurement frequency band was typically enough. However, the respiratory airflow waveform with the various frequency components and the shapes is complicated. Moreover, we already know that the respiratory waveform pattern changes by a state of health and activities. To solve these problems, this paper deals with the development of unsteady gas flow generator for the various breathing waveform reproduction. At first, we carry out the survey on the respiratory gaseous flow. Based on the research background and the above mentioned survey, we develop and introduce the unsteady gas flow generator which can generate the various respiratory flows. And we show the effectiveness of the developed unsteady gas flow generator. Moreover, we conduct the performance evaluation of the developed unsteady gas flow generator and the uncertainty analysis.
Skip Nav Destination
ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels
August 1–5, 2010
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4949-1
PROCEEDINGS PAPER
Development of Unsteady Gas Flow Generator for Evaluating the Dynamic Characteristic of Respiratory Gaseous Flow Meter
Tatsuya Funaki
Tatsuya Funaki
National Metrology Institute of Japan, AIST, Tsukuba, Ibaraki, Japan
Search for other works by this author on:
Tatsuya Funaki
National Metrology Institute of Japan, AIST, Tsukuba, Ibaraki, Japan
Paper No:
FEDSM-ICNMM2010-30748, pp. 185-192; 8 pages
Published Online:
March 1, 2011
Citation
Funaki, T. "Development of Unsteady Gas Flow Generator for Evaluating the Dynamic Characteristic of Respiratory Gaseous Flow Meter." Proceedings of the ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 2, Fora. Montreal, Quebec, Canada. August 1–5, 2010. pp. 185-192. ASME. https://doi.org/10.1115/FEDSM-ICNMM2010-30748
Download citation file:
10
Views
Related Proceedings Papers
Related Articles
Steady and Unsteady Airflow Through the Intake Valve of a Reciprocating Engine
J. Fluids Eng (September,1985)
Dynamics of Voluntary Cough Maneuvers: A Theoretical Model
J Biomech Eng (January,2009)
Control of Circumferential Wall Stress and Luminal Shear Stress Within Intact Vascular Segments Perfused Ex Vivo
J Biomech Eng (October,2008)
Related Chapters
Performance Testing of Combined Cycle Power Plant
Handbook for Cogeneration and Combined Cycle Power Plants, Second Edition
Later Single-Cylinder Engines
Air Engines: The History, Science, and Reality of the Perfect Engine
Compact Ultra-Wideband Antenna with Dual Band-Notches for WiMAX and Upper WLAN Band
International Conference on Computer and Computer Intelligence (ICCCI 2011)